Study on the splashing short-circuited beads' characteristics in fire scenes by density methods

摘要

In fire scene, the reasons for the formation of splashing melted beads are confirmed difficultly for investigators. The paper is studying density distribution characteristics of the splashing melted beads in fire scene. The splashing PSCMB and SSCMB are gotten from experimental lab. After meaturing density of the splashing PSCMB and SSCMB, SPSS analysis software was used for the analyzing density data of the splashing PSCMB and the splashing SSCMB. This results showed that the density value of splashing PSCMB and splashing SSCMB have a little degree of overlapping. The overlapping scope is 6.7-6.9. So within the scope, there are 3 PSCMB and there are 2 SSCMB. The ratio is respectively 10% and 6.67%. it is a good discrimination. The results could be used for helping fire investigators distinguishing the shaping reasons of splashing melted beads from fire scenes. This method can be the supplement for the existing appraisal method (ep.Metallographic analysis). And it is practical and effective for distinguishing from the splashing PSCMB and SSCMB.